Synonyms|443Antonyms|260|Broader|12Narrower|18Related|368
5
flippancy(noun, irreverence)
5
comedy
5
frivolity(noun, silliness, childishness)
4
foolishness(sense, wisdom)
4
insincerity
4
levity(noun, gravity, silliness, funniness)
3
cheerfulness
3
folly(noun, care, idea, nonsense)
3
frivolousness
3
funniness(noun, insincerity)
3
gaiety
3
insignificance
3
joviality(noun, work)
3
lightness(noun, insincerity)
3
merriment
3
piece of daring behaviour
3
prank
2
cheer(noun, happiness, sorrow, sadness)
2
flightiness
2
fun(work, gloom)
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APASmart Define. (2015). seriousness thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/seriousness/thesaurus/antonyms
ChicagoSmart Define. 2015. "seriousness thesaurus" https://smartdefine.org/seriousness/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, seriousness thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/seriousness/thesaurus/antonyms>.
MLASmart Define. "seriousness thesaurus" 23 December 2015. Web. 23 September 2026. <https://smartdefine.org/seriousness/thesaurus/antonyms>